Seiko Cal. 4540 - 190

The 4540-190 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4540 caliber with 24j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-365cf140dc31]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1994

Related Models

• Seiko 6228-281
• Seiko 6312-401
• Seiko 6687-554
• Seiko 5673-880
• Seiko 5294-869
• Seiko 0771-358
• Seiko 4522-907
• Seiko 4551-602
• Seiko 4521-969
• Seiko 6340-457
• Seiko 4462-481
• Seiko 7152-598